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ovum

(Encyclopedia)ovum ōˈvəm [key], in biology, specialized plant or animal sex cell, also called the egg, or egg cell. It is the female sex cell, or female gamete; the male gamete is the sperm. The study of the ovu...

cactus

(Encyclopedia)cactus, any plant of the family Cactaceae, a large group of succulents found almost entirely in the New World. A cactus plant is conspicuous for its fleshy green stem, which performs the functions of ...

Annelida

(Encyclopedia)CE5 A. The earthworm, Lumbricus terrestris, representative of the phylum Annelida. B. Internal anatomy of an earthworm. Annelida ənĕlˈĭdə [key] [Lat., anellus=a ring], phylum of soft-bodied, ...

Natives, Middle American

(Encyclopedia)Natives, Middle American or Mesoamerican, aboriginal peoples living in the area between present-day United States and South America. Although most of Mexico is geographically considered part of North ...

dome

(Encyclopedia)CE5 Parts of a dome dome, a roof circular or (rarely) elliptical in plan and usually hemispherical in form, placed over a circular, square, oblong, or polygonal space. Domes have been built with a...

Wright, Frank Lloyd

(Encyclopedia)Wright, Frank Lloyd, 1867–1959, American architect, b. Richland Center, Wis., as Frank Lincoln Wright; he changed his name to honor his mother's family (the Lloyd Joneses). Wright is widely consider...

Borneo

(Encyclopedia)Borneo bôrˈnēōˌ [key], island, c.287,000 sq mi (743,330 sq km), largest of the Malay Arc...

newspaper

(Encyclopedia)newspaper, publication issued periodically, usually daily or weekly, to convey information and opinion about current events. In England large newspaper-publishing empires were built up by Lords...

Mennonites

(Encyclopedia)Mennonites mĕnˈnənīts [key], descendants of the Dutch and Swiss evangelical Anabaptists of the 16th cent. The name Mennonite is derived from Menno Simons (c.1496–1561), Dutch reformer and org...

Svalbard

(Encyclopedia)Svalbard svälˈbärd [key], archipelago (23,958 sq mi/62,051 sq km), island group (2015 est. pop. 2,700), possession of Norway, located in the Arctic Ocean, c.400 mi (640 km) N of the Norwegian mainl...